I have 2 PIR sensors that i want to use on my Raspberry Pi however both 5v's are being used and I'm left with the 3.3vs and am unsure if i am able to use it as it may damage the board? Here is a link to the sensor i am using.


  • 1
    You can power multiple devices from one power pin.
    – joan
    Apr 28, 2021 at 17:09
  • How would i do that? @joan
    – Kazi Ilyas
    Apr 28, 2021 at 17:11
  • 3
    Join two wires together.
    – joan
    Apr 28, 2021 at 17:23

1 Answer 1


You can create a 5V rail using a breadboard. If not that, then you can use a 9V battery and pass it through a voltage regulator like lm7805 to get the desired voltage. To create a rail, connect 5V to one of last two horizontal rows of your breadboard

  • (+1) however that's not necessary. As @joan stated simply connect it to the same pin
    – 44yu5h
    Apr 25, 2023 at 10:38

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